Unconformable overlap oil-gas reservoir physical simulation experimental device and experimental method

An experimental device and physical simulation technology, applied in teaching models, educational tools, instruments, etc., can solve problems such as undiscovered unconformity overlying oil and gas reservoirs

Inactive Publication Date: 2016-01-20
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Most of the existing physical simulations of oil and gas migration and accumulation mechanisms are carried out in a large sandbox. Different geological models are constructed in the sandbox...

Method used

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  • Unconformable overlap oil-gas reservoir physical simulation experimental device and experimental method
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  • Unconformable overlap oil-gas reservoir physical simulation experimental device and experimental method

Examples

Experimental program
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Embodiment 1

[0050] Embodiment 1: as figure 1 As shown, a physical simulation experiment device for unconformity overlying oil and gas reservoirs includes a formation oil and gas reservoir simulator. The formation oil and gas simulator includes a formation box 1, an unconformity cabin 2 located below the formation box 1 and a The roof 3 above the body 1; the formation box 1 includes three independent simulation rooms, which are respectively simulation room I11, simulation room II12, and simulation room III13. The length of simulation room I11 is longer than that of simulation room II12, and the length of simulation room II12 is The length of simulation room III13 is longer than that of simulation room III13. Simulation room I11, simulation room II12 and simulation room III12 are all in contact with unconformity cabin 2; Holes are provided on the top plate of each layer of the simulation room, and oil injection holes 4 connected to the fluid injection system are provided at the bottom of th...

Embodiment 2

[0061] Embodiment 2: as Figure 8As shown, a physical simulation experiment device for unconformity overlying oil and gas reservoirs includes a formation oil and gas reservoir simulator. The formation oil and gas simulator includes a formation box 1, an unconformity cabin 2 located below the formation box 1 and a The roof 3 above the body 1; the formation box 1 includes three independent simulation rooms, which are respectively simulation room I11, simulation room II12, and simulation room III13. The length of simulation room I11 is longer than that of simulation room II12, and the length of simulation room II12 is The length of simulation room III13 is longer than that of simulation room III13. Simulation room I11, simulation room II12 and simulation room III12 are all in contact with unconformity cabin 2; Holes are provided on the top plate of each layer of the simulation room, and oil injection holes 4 connected to the fluid injection system are provided at the bottom of th...

Embodiment 3

[0073] Embodiment 3: The experimental method of the present invention is described by taking a simulated formation unconformity overlying oil and gas reservoir with a formation dip angle of 30 degrees as an example. The experimental setup described in Example 2 was used for the experiments. During the experiment, according to Figure 10 The physical simulation experiment model of the unconformity overlying oil and gas reservoir shown is used to configure the stratigraphic oil and gas reservoir simulator, Figure 10 Different compartments in the model shown are filled with quartz sand of different grain sizes to represent differences in geological processes such as deposition and cementation. During the experiment, the simulation room I was filled with 380 micron particle size quartz sand as medium sandstone, the simulation room II was filled with 550 micron particle size quartz sand as coarse sandstone, and the simulation room III was filled with 830 micron particle size quar...

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Abstract

The invention relates to an unconformable overlap oil-gas reservoir physical simulation experimental device and experimental method. The experimental device comprises a stratum box body, an unconformable cabin located below the stratum box body and a top plate located above the stratum box body; the stratum box body comprises a plurality of layers of independent simulation chambers; the length of an upper-layer simulation chamber is smaller than that of an upper-layer simulation chamber; each simulation chamber is not in contact connection with the unconformable cabin; holes are formed in side plates of each simulation chamber which contact with the unconformable cabin and the top plate of the unconformity cabin respectively; oil injection holes of a fluid injection system are formed in the bottoms of side plates of the simulation chambers, wherein the bottoms of the side plates of the simulation chambers are opposite to the side plates; a plurality of permeable baffles are arranged in the unconformable cabin; the unconformable cabin is divided into cabin units through the permeable baffles, wherein the number of the cabin units is equal to the number of the simulation chambers; and the simulation chambers are in one-to-one correspondence with the cabin units. With the experimental device and experimental method of the invention adopted, the simulation of an oil-gas migration and accumulation process in strata under unconformable surface overlap can be realized, and unconformable overlap oil-gas reservoir formation mechanisms and controlling factors are analyzed, and understanding of oil-gas accumulation factors and oil-gas distribution rules of the strata can be deepened, and a basis can be provided for oil-gas exploration in petroliferous basins.

Description

technical field [0001] The present invention relates to an experimental device and experimental method for oil and gas migration and accumulation, in particular, to a physical simulation device and experimental method for the formation mechanism of unconformity overlying oil and gas reservoirs. The sealing degree of the overlying strata can be traced to control the oil and gas migration and accumulation of the unconformity of the overlying strata. Background technique [0002] Differential ups and downs of the crust often cause the advancement and retreat of the water body, which is manifested as "overlapping" and "retreating" of the strata on the profile. When the water body progresses, the sedimentary range gradually expands, the newer sedimentary layer covers the older sedimentary layer, and expands towards the land, and the stratum overlay is formed when it contacts the older stratum erosion surface with unconformity. When the water body is progressive, the water basin ...

Claims

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Application Information

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IPC IPC(8): G09B25/00
CPCG09B25/00
Inventor 陈中红黄伟
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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